Coal mining machine



Dec. l, 1936.

J. F. `.1cm GOAL MINING MACHINE 18 Sheets-Sheet l Filed Aug. ll, 1933 ....mI o

A m II lN IMEI Dec. l, 1936. J. F. JOY

y coAL MINING MACHINE ATTORNEYS.

18 Sheets-Sheet 2 l r w I n ..|l A

Dec. 1, 1936.- J, F. JOY

COAL MINING MACHINE Filed ug. 11, 1953 18 Sheets-Sheet 3 ATTORNEY5.

Dec. 1, 1936. J. F. JoY

COAL MINING MACHINE Filed Aug. l1, 1933 18 Sheets-Sheet 4 ATTORNEYS.

Dec. l, 1936. J. F. JOY

' com.I MINING MACHINE Filed Aug. 11, 1935 18 Sheets-Sheet 5 WV s M R: 5 I N m 7 w www m o n w m m www 4 l www .www www.

,mK @El EIR m Dec. l, 1936. J. F. JOY

` COAL MINING MACHINE Filed Aug. 11, 19:53

1s sheets-sheet e INVENTOR.

ATTORNEYS D. 1, 1936. J. F. JOY I 2,062,651

COAL MINING MACHINE Filed Aug. 11, 1933 18 Sheets-Sheet 7 ATTORNEYS.

Dec. 1,1936. Jj F. JOY

COAL MINING MACHINE Filed Aug. ll, 1953 v18 Sheets-Sheet 9 Y. wf/67 /'/1NVENTOR.

' ATToRNEYs.

Magni W 4 485 4 /44.

nu. w. 3a @y Dec. l, 1936. J. F. JoY 2,062,657

COAL MINING MACHINE Filed Aug. ll, 1933 18 Sheets-Sheet 10 4/5 T um 4/3 379 330 v 1N VEN TOR.

3 l d l \32273 BY \50 m m ATTORNEYS.

lDec. 1, 19

`J. F.JoY

COAL MINING MACHINE Filed Aug. 11, 1935 18 Sheets-Sheet 1l y INVENTOR.

BY/WW? @L4M ATTORNEYS.

Dec. 1, J. F. JOY

COAL MINING MACHINE Filed Aug., ll, 1933 18 Sheets-Sheet l 2 F1a 2.9L 442 44/ 40 /INNVENTOR l BY XW af? M QE/L.,

ATTORNEYJ.

Dec. 1, 1936. J, F JOY GOAL MINING MACHINE Filed Aug. 11, 1935 18 Sheets-Sheet l5 L3 1N VENTOR. @M @f7 ATTORNEY.

Dec. 1, 1936. J; F. JOY 2,062,651

COAL MINING MACHINE Filed Aug. 11, 1933 18 Sheets-Sheet 14 ,'438 Z7G 35 45A I/ 497 49a 4%- l il., INVENTOR,

W A 4;/ Hdd-1M 7 um BY m u l m 1 i I 500 /V W/ ATTORNEYS.

Dec. 1, 1936.

J. F. JQY

COAL MINING MACHINE 18 shets-sheet 1e Filed Aug.. l1, 1933 ww n @4m m /HE O v n Dec. 1, 1936. J. F. JoY 2,062,657

COAL MINING MACHINE Filed Aug. 11, 1953 18 sheets-sheet 17 INVENTOR.

4 4 ATTORNEYS.

De. l, J. F. JOY

xcoAL MINING MACHINE Filed Aug. 11, 1933 18 Sheets-$11691', 18

5/4 V` /J'QS INVENTOR.

Patented Dec. l, 1.936

UNITED sTATEs PATENT OFFICE chinery Company, tion of Massachusetts Chicago, Ill., a corpora- Application August 11, 1933, serial No. $4,707 3s claims. (c1. 26a-2s) My invention relates to mining machines and, in particular, to coal mining machines adapted to cut kerfs in a coal seam.

An object of my invention is to provide a compact and durable coal mining machine capable of being easily maneuvered and adjustable to cut either vertical or horizontal kerfs on any level in a rapid and etlicient manner.

Another object is to provide a coal mining machine, the major movements of which are actuated by fluid pressure devices. A

Another object is to provide such a machine with a simple, efficient and compact valve system, and with centrally arranged controls at the rear of the machine away from any danger of falling coal, and yet within the reach of a single operator.

Another object is to provide an arrangement of walking jacks whereby the machine may be readily advanced or turned in a small space.

Another object is to provide a vertically yieldable mounting arrangement for the cutter blade and chain.

Another object is to provide such a machine arranged to slide on the mine iloor, and-a ilexible feeding vsystem with precisely controlled feeding s conveniently arranged at the rear of the Another object is to'provide such a machine 30 withdeilecting sheaves at the forward end thereof arranged for adjustable movement longitudinally of the machine for the purpose of balancing the pullon the feed rope and thereby making possible the movement ofthe machine at right.

" angles to the coal face regardless of the resistance met by the cutter blade.

Another object is to vsion devices whereby a provide power transmissingle motor is made capable of actuating the cutting mechanism and 40 also the flexible feeding mechanism regardless of .the position in which the machine may be placed. Another object is to provide such a machine having a. cutter head adjusting mechanism which is simple and inexpensive, yet quick and eiective. s

Another object `is to provide safety devices which will prevent injury to the machine in case of its encountering great resistance or obstacles. f Another object is to provide such a machine whereinjthe weight is precisely balanced by a careful arrangement of the parts, thereby enhancing the ease of turning or pivoting in conjunction with the walking jacks.

Another object is to provide such a machine with vertical adjusting means arranged to cause blade to move through a its rear end during vertical the tip of the cutter greater distance than movements.

Other objects and purposes will be made apparent from the` following description taken in' connection with the drawings and appended claims.v l

In the drawings:

Figure 1 is a side elevation machine embodying, one form shown cutting a kerf near the Figure 2 is a in Figure 1.

Figure 3 is a side elevation of the same machine with the cutter head inverted to make a cut near the roof level.

Figure 4 is a side elevation of the same machine with the cutter head turned to one side in order to make a shearing cut or vertical kerf.

' Figure 5 is a side elevation, partly in section, showing the elevating members, the main base and the sub-frame or skid plate.

Figure 6 is a 6 6 of Figure link structure.

Figure 7 is a 1 1 of Figure link structurel Figure 8 is a plan view of the sub-frame or skid plate and the main base in position thereon.

Figure 9 is a cross section along the line 9 9 of Figure 8.

Figure l0 is a diagrammatic elevation showing the action of the walking jacks in advancing the sub-frame or skidplate relative to the main base.

Figure Y11 is a cross section through the machine along the line Il ll of Figure 2.-

Figure 12 is a plan View, partly in section, of the electric motor and the power transmission system therefrom to the cutter head and the fluid pressure pump. f

Figure 13 is a cross section along the line |3|3 of Figure 12. g

Figure 14 is a section through the motor controller housing showing the push button mechamsm.

Figure 15 is a. section through the motor controller housing showing the light cable gland.

Figure 16 is a section through the motor controller housing showing the motor andv trailing cable gland.

Figure 17 is a. section through the motor controller housing, showing the fuse base.

Figure 18 is aside view of a portion of the 55 of a coal mining of my invention, door level. plan view of the machine shown transverse section along the line showing the outer connecting v ,25 transverse section along the line showing the middle connecting 2 cutter blade, chain and drive sprocket in the position shown in Figure 4.

Figure 19 is a view of the opposite side of the parts shown in Figure 18.

Figure 20 is a side elevation, partly in section, along the line 20--20 of Figure l2, showing the engaging and disengaging mechanism of the power transmission shaft.

Figure 21 is a central horizontal section through the cutter blade and adjacent mechanism arfranged as in Figure 4.

Figure 22 is a plan view of the lower rear end r of the machine, showing details of the feeding', y

` the valve of Figure drums and guiding sheaves.

Figure 23 is an end elevation, partly in section, of the machine as a. whole, showing the feeding drums.

Figure 24 is a central vertical section alongthe line 24-24 of Figure 22, showing a portion of the change-speed gearing for driving the feeding drums. (For the remainder, see Figure 28.)

Figure 25 is a central vertical section through a feeding drum, showing its engaging and disengaging mechanism.y

Figure 26 is a plan view of the upper rear end of the machine, showing the transmission and pump controls.

Figure 27 is an end elevation, partially in section, of the transmission assembly with the feeding drums removed.

Figure 28 is a section along the line 28--28 of Figure 27, showing the remainder of the changespeed gearing of Figure 24.

Figure 29 is a section along the line 29-29 of Figure 2, showing details of one of the guiding sheaves.

Figure 30 is a plan view, of the fluid tank, fluid pump, valve box.

Figure 31 is a vertical section along the line 3l-3I of Figure 30. g

Figure 32 is a vertical section along the line partially in section, safety valveV and 32--32 of Figure 31, showing details of the pump control connections.

Figure 33 is a horizontal section along the line 33--33 of Figure 31, showing details of the pump.

Figure 34 is a side elevation, partly broken away, of the pump shown' in Figure 33.

Figure 35 is a detail cross section of the fluid pressure relief valve or safety valve shown in Figure 30,.the view taken on line 35-35 ofFig. 31.

Figure 36 is an end View of the valve box.

Figure 37 is a horizontal section along the line 31-31 of Figure 36.

Figure 38 is a vertical cross section along the line 38-38 of Figure 37.

Figur line 39e-39 of Figure 37.

Figure 40 is a vertical cross section along the line 40-40 of Figure 37. Figure 41 is a vertical cross line lI-II of Figure 37.

Figure 42 is a vertical longitudinalsection throughv the valve box along the line 42-42 of Figure.37.

43 through one of the longitudinal feed cylinderassemblies.

Figure 44 is a `central longitudinal vsection through one of the lifting or elevating cylinders. Figure 45 is a central longitudinal section through one of the walking cylinders or `walking iackS- Figure 46 is a central longitudinal section through the cutter blade tilting cylinder.

section along the vnections from the .changing mechanism endless cutter chain, and

e 39 is a vertical cross section along the is a central longitudinal section- Figure 47 is a diagram showing the hydraulic circuit for the cutter blade tilting cylinder.

Figure 48 is a diagram showing the hydraulic circuit for the lifting or elevating cylinders.

Figure 49 is a diagram showing the hydraulic circuit for the longitudinal feeding cylinders.

.Figure 50 is a diagram s, owing the hydraulic circuit for the walking jacks. "i

Figure 51 is a horizontal section valong the line 5I-5I of Figure 27, showing the driving conmotor through the speed to the winding drums. Figure 52 is .a central vertical section through 42, but with the valve adjusted to permit a ow of fluid in one direction.

Figure 53 is a central vertical section as in Figure 42, but with the Valve adjusted to permit a flow of fluid in the opposite direction from that of Figure 52.

General construction summarized In general the coal mining machine of my invention in its preferred rform consists of a subframe or skid plate on a main frame reciprocable *relatively thereto vby hydraulic cylinders. On the main frame *is mounted hydraulically operated elevating mechanism culminating in a-cutter blade having an is independently tiltable `by 'a `hydraulic cylinder. Power transmission mechanism 1. connects` this cutter head with an electric motor mounted on the main frame, and further transmission mechanism connects the motorwith a pair ofvfeeding drums at the rear of the machine; On either side of the machine is placed a hydraulic jack known as a walking jack for: purposes Connected with the motorl isa fluid` pressure pump from which box at the rear of the machine to the various hydraulic cylinders. The principal controlsy of the machine are thus located at the Arear end where there is the minimum danger of accident to the operator by reason of falling coal or other y 1 similaroccurrences.

Main base, sub-frame and longitudinal feeding A apparatus a plate-like member running rails 3, are guiding girders 5, secured to which ,are spacing bars 6 and retaining bar vsu'l. -I .(Figure 11.)

By this arrangementthe main-,baseA Iy is 'slidable on the skid plate l, this hydraulic cylinder 8 girder 2 by a web 9. (Figures. and 1 1.) ',The piston rod I0 of thelongitudinal-feed;cylinder yis secured at its outer end to a, bracket Il onfthe skid plate 4 by nuts lzgonj a stud bolt.,- I3, .;-The longitudinal feed cylinder v8 i.sshcn1 rn.in,dete il.i xi Figure 43. The cylinder 811s closed atits roerend by a head Il into which isf .threadediaistudkbolt1 I5'with a nut i6 for securlngthe-cylind web 9, as previously described::'l?he Vfl;1,e ad -l4 also contains a port I1 which is secured to1 each supporting threaded at its which is slidably mounted r the cutter bladevitself '1- described later. I

drawings in' detail, Lisa main side. ofythermain base I' are' i skid platea vrainnim;the length of the skid plate I, adjacent `to the basebeing accomplished'by a 1?- to. lthe u outer 

